We also thank John Kent, Fred Bookstein, Kanti Mardia and Ian Dryden for stimulating discussions about the mathematical details of the method, Henry McGhie (Manchester Museum) for access to the specimen and Bernard Lathuilière for providing reprints of papers and helpful discussion.
Monika Müller is to be thanked for providing specimens of Dorvillea bermudensis.
We would like to thank Peter Ladurner (University of Innsbruck, Austria) for providing specimens of Convoluta pulchra and Ketil Malde (University of Bergen, Norway) for helping in the EST data analysis.
The authors thank the Bureau of Land Management, the US Forest Service, the Georgia DNR, and the Bolton (MA Conservation Commissionn, all for assistance and permission to collect specimens on public lands; the curators of NY, GH, WTU, ALA, and WIS for permission to sample herbarium specimens; and the DNA Bank Network for providing two samples.
We would like to thank the Swedish Malaise Trap Project for providing specimens for this study.
I thank the staff of the U.S. National Museum (USNM) and the Museum of Vertebrate Zoology MVZZ) for providing specimens, and A. Wynn for providing collection locality data.
We thank Jayme Sones, David Porco and Xin Zhou for providing specimens or DNA extracts.
We thank Günter Schweigert, SMNS Stuttgart; Roger Frattigiani, Laichingen; and Michael Fecke, Langenberg, for providing specimens of Jurassic thylacocephalans for study.
We are also grateful to the following people for help with field work or for providing specimens: Jean Krejca (Zara Environmental LLC), Tina Cheng, Danny Cluck, Sean Rovito, Matt Medeiros and Tate Tunstall.
Small financial incentives for providing specimens in bio-behavioural surveys, in this case urine, might also increase participation rate [ 25].
